chore: extract finding ip in method

test/jest/acceptance/https.spec.ts

@@ -4,32 +4,34 @@ import { createProjectFromWorkspace } from '../util/createProject';
 import { getFixturePath } from '../util/getFixturePath';
 import { runSnykCLI } from '../util/runSnykCLI';
 import { isCLIV2 } from '../util/isCLIV2';
+import * as os from 'os';
 
 jest.setTimeout(1000 * 30);
 
-describe('https', () => {
-  let server: FakeServer;
-  let env: Record<string, string>;
-
-  beforeAll(async () => {
-    let ipaddress = '';
-    const os = require('os');
-    const interfaces = os.networkInterfaces();
+function getFirstIPv4Address(): string {
+  let ipaddress = '';
 
-    for (const groupKey of Object.keys(interfaces)) {
-      const group = interfaces[groupKey];
+  const interfaces = os.networkInterfaces();
+  for (const [, group] of Object.entries(interfaces)) {
+    if (group) {
       for (const inter of group) {
-        if (
-          (inter.address != '127.0.0.1' || inter.address != '::1') &&
-          inter.family == 'IPv4'
-        ) {
+        if (inter && inter.family == 'IPv4' && inter.address != '127.0.0.1') {
           ipaddress = inter.address;
           break;
         }
       }
     }
+  }
+  return ipaddress;
+}
 
-    console.log(ipaddress);
+describe('https', () => {
+  let server: FakeServer;
+  let env: Record<string, string>;
+
+  beforeAll(async () => {
+    const ipaddress = getFirstIPv4Address();
+    console.log('Using ip: ' + ipaddress);
 
     const port = process.env.PORT || process.env.SNYK_PORT || '12345';
     const baseApi = '/api/v1';